Anbang [ANBANG.UL], one of China’s most aggressive buyers of overseas assets, said last week that Chairman Wu Xiaohui was temporarily unable to fulfil his duties due to personal reasons. People familiar with the matter said Wu had been detained by authorities earlier in June.

Anbang has said Wu’s duties would be managed by other senior executives, and that its business was operating normally. No other details have been provided by the insurer.

Anbang Group is one of Minsheng Banking’s largest private shareholders.

“It is precisely because Anbang is a major shareholder that our controls are stricter and we strictly disclose related party transactions,” Hong is reported to have said.

Hong also said Minsheng will continue to sell Anbang’s insurance products, according to the Caixin report.

Employees at several Chinese banks told Reuters last week that they had stopped selling some Anbang products, in some cases several months ago.

Banks are the main distribution channel for Anbang’s insurance products.

Minsheng has its own legal challenges, with the head of one of its branches and some staff under investigation in connection with missing funds worth 1.65 billion yuan.